PHY · PHY-2026-C11-029भौतिकी (Physics)
A 100-turn closely wound circular coil of radius 5 cm has a magnetic field of 3.14 × 10⁻³ T at its centre. The current flowing through the coil, and the magnitude of the magnetic moment of this coil are, respectively : (Take μ0 = 4π × 10⁻⁷ T m/A)
- A2A, 10 A·m²
- B2.5A, 20 A·m²
- C2A, 4 A·m²
- D2.5A, 2 A·m²
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